Find the sum of even numbers between 51 to 100
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52+54+ _____________+98
a=52 d=2 l=a+(n-1)d
98 =52 + (n-1)2
n=24
S = 24/2(52+98)
= 12*150 =1800
a=52 d=2 l=a+(n-1)d
98 =52 + (n-1)2
n=24
S = 24/2(52+98)
= 12*150 =1800
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